The number of people who stated their religion was Christianity in 2011 was fewer than in 2001, figures from the Office for National Statistics show.
Christians decreased to 59 per cent (33.2 million) in 2011 from 72 per cent (37.3 million) in 2001.
The amount of people who said they had no religious affiliation increased from 15 per cent (7.7 million) in 2001 to 25 per cent (14.1 million) in 2011.
More top news
Wintry weather into the weekend
Jeremy Hunt could impose controversial new contracts for junior doctors by Monday, ITV News Political Editor Robert Peston has learned.
A new video has emerged online purporting to show a four-year-old British boy blowing up a car and killing three prisoners on behalf of IS.